If the world's most legendary business incubator, instead of promoting strong beliefs about the inefficiency of distributed teams, helped create and teach how to manage them, there would not be 15 unicorn companies raised in Y Combinator, but many more. And in Paul's words, "It costs nothing to fix."
Yes, distributed teams are more difficult, they concern investors, but this is something that can be changed on our own (unlike politics and Donald Trump). In addition, remote IT talent is already a well-established culture, they do not have to be taught, they do not need to be nursed: they know how to do their job.
We could list many prominent companies whose teams are fully distributed around the world, you already know them: InVision, Buffer, WordPress, GitLab, Zapier, Basecamp, etc. Instead, we'll give an example
of graduates of the same Y Combinator, who managed to succeed, creating a distributed team from the very beginning.